[en] Single-spin asymmetry in high-energy inclusive pion production processes using polarized proton and antiproton beams is discussed. Significant effects have been observed in the projectile fragmentation region. 6 refs

[en] Are there rotating constituents in polarized nucleons and nuclei. This is the question I would like to discuss in the talk. I shall present the basic ideas of an experiment my collaborators Pan, Xie, Zhu and myself proposed in this connection, and show some of the results we obtained

[en] The question of existing the orbiting constituents in polarized hadrons is discussed and answered in the affirmative. Theoretical arguments and experimental evidence which have led to this conclusion are summarized in talk. 15 refs

No abstract available

[en] Integrated use of surface and groundwater resources is essential to provide reliable water supply and to sustainably manage the water resources. In the Akaki watershed, groundwater pumping contributes for more than 25% of the water supply to Addis Ababa City, the capital of Ethiopia. The groundwater abstraction is significantly increased without reliable quantification of hydrologic and hydrogeological components of the water resources. In view of that, this study applied the SWAT model calibrated with SWAT-CUP for surface water simulation and MODFLOW model for groundwater simulations. The MODFLOW was calibrated using the water table and baseflow. Using the two models the surface water and groundwater potentials in the Little Akaki sub-basin under different recharge (change based on land use change) and pumping scenarios were analyzed. The combination of the two models, SWAT and MODFLOW models successfully estimated the surface water and groundwater resources and the results found were acceptable.

[en] A general method is given for the construction of gauge-fixed BRS and anti-BRS invariant action for the antisymmetric tensor gauge theory. The method is based on the single requirement that the space of fields carries an irreducible representation of the SP(2)-BRST algebra

[en] The observed dependence on energy and that on (pseudo) rapidity of multiplicity distributions in high-energy nondiffractive antipp collisions can be understood in terms of a statistical model proposed some time ago by the Berliner group. The result is interpreted in the quark-gluon picture. The possible role of gluon-gluon interactions in such processes is discussed. 12 refs

[en] A systematic analysis of the existing data on low-psub(T) multiparticle production processes has been made. The results show that such processes are statistical, and hence not very much knowledge of QCD is required to understand the observed phenomena. 5 refs

[en] The effect of a weakly coupled periodic lattice in terms of achieving emittance exchange between the transverse and longitudinal directions is investigated using the generalized Courant-Snyder theory for coupled lattices. Recently, the concept and technique of transverse-longitudinal emittance coupling have been proposed for applications in the Linac Coherent Light Source and other free-electron lasers to reduce the transverse emittance of the electron beam. Such techniques can also be applied to the driver beams for the heavy ion fusion and beam-driven high energy density physics, where the transverse emittance budget is typically tighter than the longitudinal emittance. The proposed methods consist of one or several coupling components which completely swap the emittances of one of the transverse directions and the longitudinal direction at the exit of the coupling components. The complete emittance exchange is realized in one pass through the coupling components. In the present study, we investigate the effect of a weakly coupled periodic lattice in terms of achieving emittance exchange between the transverse and longitudinal directions. A weak coupling component is introduced at every focusing lattice, and we would like to determine if such a lattice can realize the function of emittance exchange.

[en] Water-soluble conducting poly(2-(3thienyloxy)ethanesulfonic acid) (PTOESA)/V₂O₅ nanocomposite, (PTOESA)_xV₂O₅, was prepared by simply mixing PTOESA with V₂O₅ wet gel at room temperature. XRD data showed that the interlayer spacings of (PTOESA)_xV₂O₅ films are 14.0±1.5 A and increased as the polymer content increased. These values are consistent with the insertion of polythiophene chains into the V₂O₅ layer gallery. The formation of alternative layers of PTOESA and V₂O₅ was further supported by depth profile SIMS analyses. Cyclic voltammograms of (PTOESA)_xV₂O₅ film showed two pairs of redox peaks with colors varying from orange, yellowish green, green, to purple blue, depending on the stoichiometry of the nanocomposites. Moreover, a synergetic effect was observed on the electrochromic properties of these nanocomposites. It was found that the optical contrast (ΔOD) of the composites is better than those of PTOESA and V₂O₅ at the film thickness from 150 to 500 nm. The oxidation optical response time of (PTOESA)_xV₂O₅ is independent of the stoichiometry and falls in between those of PTOESA and V₂O₅. At higher polymer content (x>0.5), the reduction optical response time of (PTOESA)_xV₂O₅ is smaller than those of PTOESA and V₂O₅. Variable temperature conductivity data showed that the conductivity of (PTOESA)_xV₂O₅ films increased as temperature increased, characteristic of thermal activated behavior, which was dominated by the interparticle contact resistance. The room-temperature conductivity of water-soluble (PTOESA)_xV₂O₅ films was in between those of PTOESA and V₂O₅ xerogel and higher conductivity was found in the composite with lower polymer content. The anomalous conductivity of (PTOESA)_xV₂O₅ with high PTOESA content may be due to the reason that the higher the polymer content, the bigger the grain size of (PTOESA)_xV₂O₅ film as revealed with scanning electron microscopy and AFM micrographs